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Author: Site Editor Publish Time: 2026-11-11 Origin: Site
We publish the SB series parameter table, so this is the one article where we can put the numbers on the table and work through them line by line. A White Rice Machine for Small and Medium Rice Processing Mills is often bought on a single capacity figure, but four models sit between 400 and 2300 kg per hour, and the difference is not just size. It changes the motor you need, the power source you can use and the working day you can plan around.
We will read the published table as it stands, describe the one-pass process from paddy to white rice, and show the arithmetic we use to turn an hourly range into a daily plan. We will also be plain about the gaps. Broken rate percentages, outturn yields, whiteness values and the dimensions and weights of the SB units are not on our pages, and we will not supply them from a generic catalogue.
The SB combined unit is described as a single pass: paddy goes in at the hopper and white rice, bran and husk come out at three separate outlets. The published flow runs through a vibrating screen and magnet, a rubber-roller huller, an air blower separator, an iron-cylinder whitener and a high-pressure fan. Destoning, husking, whitening and polishing are integrated rather than bought as separate machines.
That integration is the reason the SB rice mill series suits rural and small workshop sites. The page describes a compact footprint, low noise, low bran content in the finished rice and a low broken rate, with output reaching Grade 1 standard or above. We would rather you read those as descriptive claims than as contract values, because no test method or percentage is published beside them.
Four models are listed, each with a capacity range, a motor rating and a diesel equivalent. We reproduce the figures exactly as they appear on our page and ask buyers to quote the model code in an enquiry, not just a rough tonnage. The ranges overlap less than people expect, and the step from SB-10 to SB-30 is where most buyers discover their paddy intake is larger than the machine they were about to order.
SB series: the parameters we publish | |||
Model | Published capacity | Published motor | Published diesel equivalent |
|---|---|---|---|
SB-5 (SB-05D) | 400-600 kg/h | 5.5 kW | 8-10 HP |
SB-10 (SB-10D) | 700-1000 kg/h | 11 kW | 15 HP |
SB-30 (SB-30D) | 1100-1500 kg/h | 15 kW | 18 HP |
SB-50 (SB-50D) | 1800-2300 kg/h | 22 kW | 30 HP |
Two things in that table are worth slowing down for. The capacity is a range, not a fixed rating, and the motor column is paired with a diesel horsepower column because the same unit can be driven either way. We do not publish the electrical standard beyond the motor ratings shown, nor the fuel consumption of the diesel option. Those belong in the RFQ with your local supply conditions.
We are often asked which drive is better, and the honest answer is that the site decides. Our page states that the SB units are compatible with both an electric motor and a diesel engine, and it names dual power as a way to operate where grid electricity is unavailable. If a site has a stable supply at the required rating, the motor column is the simpler specification. If it does not, the diesel column is the one to plan around.
What we ask for is a description of the supply, not a brand preference: available voltage and phase, whether the feed can be interrupted during a shift, and who will service the engine. The rice mill machine range shows where the SB units sit alongside larger plants. A buyer who expects to move from diesel to grid power later should tell us at the layout stage, so the change does not become a retrofit.
The flow starts with a vibrating screen and a magnet, and the published description names stones, metal and large impurities as the targets. That order matters. A stone reaching the rubber rollers damages them and carries the fault into every later stage, while metal in the whitening chamber is a maintenance and safety problem. We ask what condition the paddy arrives in and whether it has been pre-cleaned at collection.
The high-pressure fan is listed at the whitening end for cooling the rice and separating bran thoroughly, with three discharge outlets for white rice, bran and husk. We do not publish airflow figures, screen mesh sizes or separator settings. Where a buyer's paddy carries unusually high moisture or heavy foreign matter, we ask for a sample and agree the cleaning arrangement in writing before confirming the model.
In the published flow, the iron-cylinder whitener does the bran removal and the high-pressure fan cools the grain and finishes the separation. Bran and husk leave through their own outlets, which is a commercial detail as much as a technical one. A buyer selling bran to a feed mill needs a clean, separate stream; a buyer with no outlet for it needs somewhere for it to go that will not block the discharge.
We do not publish a bran yield, a whiteness value or a degree of polishing, and we would rather not guess at them. Those depend on the paddy variety, moisture and the setting of the whitener. What we can say is that the single rice mill machine takes a different approach: it rolls coarse husk back into fine bran for feed and separates white rice, fine chaff and small broken rice. That page also lists maize, wheat, barley and sorghum dehulling.
Buyers plan in sacks per day, so we do the multiplication with them. The table below is our arithmetic on the published hourly ranges for an uninterrupted 8, 12 or 16 hour shift. It is not a published daily rating and it makes no allowance for loading, cleaning, sieve changes or downtime. We include it because it exposes a mistake we see often: choosing a model on the hourly figure and then expecting a full day's volume from a short shift.
Our arithmetic on a working day, not a published daily rating | |||
Model | 8 h shift | 12 h shift | 16 h shift |
|---|---|---|---|
SB-5 | 3.2-4.8 t | 4.8-7.2 t | 6.4-9.6 t |
SB-10 | 5.6-8.0 t | 8.4-12.0 t | 11.2-16.0 t |
SB-30 | 8.8-12.0 t | 13.2-18.0 t | 17.6-24.0 t |
SB-50 | 14.4-18.4 t | 21.6-27.6 t | 28.8-36.8 t |
Read those columns as a ceiling, then subtract the hours you will actually lose. A site that buys paddy in the morning, cleans it by hand and shuts down for a meal break will not see the third column. We ask how many hours the machine truly runs, what the intake can supply in that time and how the finished rice leaves the building, then match those answers to a model rather than to the largest number in the table.
There is a point where a larger SB unit stops being the right answer. Our 15T rice mill is listed as HB15 at 15 tons per day, with two elevator types: a single chain for raw paddy and a double chain for separating paddy from brown rice. It adds a destoner, a high-pressure fan for cleaning and a double rubber-roller husker. That is a plant with a train, not a combined unit.
The 30T rice mill is published at a minimum of 30 tons per day and lists single and double chain elevators, a cleaner, husker, polisher, grader and blowers, again with double rubber-roller husking. We ask buyers who are hesitating between the SB-50 and a 15T plant to look at grading and destoning as separate requirements. If the buyer needs a graded product, the combined unit is the wrong place to start.
The SB page calls the units easy to maintain with common spare parts, which matters more than it sounds in a remote site. A machine that waits six weeks for one roller is not a cheap machine. Our service network includes agents and branch offices in East and West Africa, a Nairobi warehouse for spare parts, installation and training, and a minimum twelve-month quality guarantee counted from the day the buyer receives the goods.
We ask buyers to tell us which parts they expect to consume in the first season, so the initial shipment reflects the actual workload rather than a standard kit. Rubber rollers and screens are the obvious examples, but the list depends on how clean the incoming paddy is. We do not publish a roller change interval in hours or tonnes; the log the operator keeps is a better guide than any figure we could put on a page.
A White Rice Machine for Small and Medium Rice Processing Mills should be chosen from a working day, not from the biggest number in a capacity column. We have put the four SB models, their motor and diesel ratings, the one-pass flow and our own shift arithmetic in front of you so the comparison can be checked. Where the numbers stop, we have said so.
Tehold International supplies grain cleaning, drying, storage, milling and packaging equipment as turnkey packages, and we would rather you send us your paddy variety, your supply situation and your real running hours than accept a tonnage quoted over the phone. We publish the SB parameter table and the flow; broken rate, outturn, whiteness and unit dimensions are not published and need to be agreed in writing with a test method.
Start from the working day, not the hourly rating. SB-5 is published at 400-600 kg/h and SB-10 at 700-1000 kg/h. Multiply by the hours the machine will really run, then allow for loading, cleaning and downtime. We also ask about the incoming supply, because the motor ratings are 5.5 kW and 11 kW respectively and the units can be diesel driven instead.
No. That table is our arithmetic on the published hourly ranges for uninterrupted 8, 12 and 16 hour shifts. It is not a published daily rating and makes no allowance for loading, cleaning or stoppages. We use it to frame the conversation about real running hours, then agree the acceptance figure with a named test method if a buyer needs one in the order.
Yes. Our SB page states that the units are compatible with both an electric motor and a diesel engine, and gives an HP equivalent beside each motor rating. Tell us the supply situation at the site, including whether power is interrupted during a shift, and we will specify the drive arrangement with the machine rather than after delivery.
No. Our page describes low bran content, a low broken rate and output reaching Grade 1 standard or above, but it does not give percentages or a test method. Those depend on paddy variety, moisture and whitener setting. If a buyer needs a figure in a contract, we agree the sampling plan and method in the RFQ first.
When you need a cleaning train, separate husking and grading rather than one combined pass. Our 15T HB15 is published at 15 tons per day with single and double chain elevators, a destoner and a double rubber-roller husker; the 30T adds a polisher and grader. We ask what the finished product has to be graded into before recommending either.
